Perhaps you should try some spelling variations:
"tao truoc cach snippets" » "tao cuoc cach snippets", "tao thuc cach snippets", "tao truoc cang snippets", "tao thuoc cach snippets", "tho truoc cach snippets", "tao truong cach snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tao truoc cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tao truoc cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao truoc cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao truoc cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.